M.K.
My RE followed my pregnancy until around week 10, confirming that the heart was beating, before discharging me to my OB. Most OBs don't want to see you much before week 10-12, near the end of the first trimester when the pregnancy is stable. I really enjoyed, and felt so much more assured, seeing the baby's heartbeat. It's probably best for you to be honest with your RE and ask how necessary it is.